/*---------------
        头部
    ---------------*/

header{
    position: relative;
    z-index: 10;
    height: 125px;
    background-image: url(../../images/bg_header.png);
    background-position: center 0;
    background-repeat: no-repeat;
    background-size: cover;
}

.topnav{
    margin-top: 40px;
}

.topnav>.nav-item{
    margin-left: 75px;
}

.topnav>.logo-item{
    margin: -35px 13px 0 88px;
}

.topnav>li:first-child{
    margin-left: 30px;
}

.topnav>li>a{
    padding: 6px 15px;
    background: none;
    color: #0e4f94;
    font-size: 18px;
    border-radius: 8px;
    border: 1px solid #0e4f94;
}

.topnav>li>a.current,
.topnav>li>a:focus, 
.topnav>li>a:hover{
    color: #f0b91c;
    border-color: #f0b91c;
    background: none;
}

.topnav>li>a.logo-item__link{
    padding: 0;
    border-radius: 0;
    border: none;
}

.topnav>li>a.logo-item__link:focus,
.topnav>li>a.logo-item__link:hover:hover{
    border-radius: 0;
    border: none;
}

@media (max-width: 1200px){
    .topnav>.nav-item{
        margin-left: 40px;
    }

    .topnav>li:first-child{
        margin-left: 0;
    }
}

@media (max-width: 992px){
    header{
        height: 100px;
    }

    .topnav{
        margin-top: 10px;
    }

    .topnav>.nav-item{
        margin-left: 30px;
    }

    .topnav>.logo-item{
        margin: -8px 13px 0 43px;
    }

    .topnav>li:first-child{
        margin-left: 15px;
    }

    .topnav>li>a{
        padding: 5px 10px;
        background: none;
        color: #0e4f94;
        font-size: 16px;
        border-radius: 8px;
        border: 1px solid #0e4f94;
    }

    .topnav>.logo-item img{
        width: 82px;
        height: 78px;
    }
}

@media (max-width: 992px){
    header{
        height: auto;
    }
}